Portable fixing support for pressure guide pipe welding

Abstract

The application relates to a portable fixing support for welding pressure guide pipes. The fixing support comprises two fixing supports which are overlapped and used for clamping pressure guide pipes into a H-shaped structure. Each fixing support comprises a horizontal rod and two vertical rods. Two fixing ears are arranged on each vertical rod and used for connecting the two fixing supports. The fixing ears on the two fixing supports are one-to-one corresponding. Screws are arranged between the corresponding fixing ears on the two fixing supports and used for connecting the two fixing supports. The two fixing supports clamp the pressure guide pipes in the middle. The clamping force is controlled by the screws, so that the heads of the two pressure guide pipes to be welded are clamped and fixed. The welding operation does not need to be supported by hands, so that the heads of the two pressure guide pipes do not deviate during welding, and the welding can be done in a tight joint.

Description

Technical Field

[0001] This invention belongs to the field of pressure-conducting pipe welding technology, and specifically relates to a convenient fixing bracket for welding pressure-conducting pipes. Background Technology

[0002] As the application of automatic control technology in the petrochemical industry matures, the technical requirements for instrument installation are also increasing. The normal operation of instrument equipment is a prerequisite and guarantee for the stable operation of the entire chemical plant. Among these tasks, the installation of instrument pressure guide pipes accounts for 30% of the instrument work. Furthermore, the connection method for these pipes is butt welding. Since the transmitters measure flammable and explosive media such as propylene and ethylene, the welding quality requirements for the pressure guide pipes are extremely high; the weld seams must be perfectly tight during the welding process.

[0003] Currently, welding pressure guide pipes suffers from low welding quality and requires additional personnel, resulting in low welding efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a convenient fixing bracket for welding pressure guide tubes in order to solve the problems mentioned in the background art.

[0005] The present invention achieves the above objectives through the following technical solutions:

[0006] A convenient fixing bracket for welding pressure guiding pipes includes two overlapping fixing brackets arranged in a U-shape for clamping pressure guiding pipes. Each fixing bracket includes a horizontal bar and two vertical bars. Each of the two vertical bars is provided with two fixing ears for connecting the two fixing brackets together. The fixing ears on the two fixing brackets correspond one-to-one, and bolts are provided between the fixing ears at corresponding positions on the two fixing brackets for connecting the two fixing brackets together.

[0007] Preferably, when the fixed bracket clamps the pressure guide tube, the crossbar is parallel to the pressure guide tube, and the distance between the crossbar and the pressure guide tube is greater than or equal to 27cm.

[0008] Preferably, the bolt is a wing bolt.

[0009] Preferably, the vertical rod includes a first rod and a second rod that are hinged together, and the second rod is provided with an anti-slip pressure block in the direction of contact with the pressure guide tube.

[0010] Preferably, the crossbar is provided with two connecting rods, and the end of the connecting rod away from the crossbar is provided with a limiting block to prevent the two pressure guide pipe joints from misaligning. The limiting blocks on the two crossbars form two rings.

[0011] Preferably, the inner wall of the anti-slip block is provided with a first telescopic rod that can automatically reset, and the upper and lower ends of the ring are provided with second telescopic rods to clamp the pressure guide pipe joints to prevent them from being misaligned. A gas pipe for gas delivery is provided between the first telescopic rod and the second telescopic rod located on the same fixed bracket.

[0012] Preferably, one of the limiting blocks is provided with an arc-shaped block that rotates circumferentially thereon, the arc-shaped block is provided with a rectangular block, the rectangular block is provided with a limiting hole for placing the welding gun head, the arc-shaped block is provided with a connecting rope, the end of the connecting rope away from the arc-shaped block is split into two forked ropes and then connected to two bolts away from the crossbar respectively, the connecting rope loosens the bolts as the arc-shaped block rotates.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention uses two fixed brackets to clamp the pressure guide tube in the middle, and uses bolts to control the clamping force so that the heads of the two pressure guide tubes to be welded are clamped and fixed, so that the welding operation does not require manual support, thus preventing the heads of the two pressure guide tubes from shifting during welding, and achieving a tight weld. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention;

[0016] Figure 2 This is the left view of the present invention;

[0017] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure at point AA.

[0018] In the diagram: 1. Crossbar; 2. Fixing lug; 3. Bolt; 4. Rod No. 1; 5. Rod No. 2; 6. Anti-slip pressure block; 7. Connecting rod; 8. Limiting block; 9. Telescopic rod No. 1; 10. Telescopic rod No. 2; 11. Arc-shaped block; 12. Rectangular block; 13. Limiting hole; 14. Connecting rope. Detailed Implementation

[0019] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1

[0021] like Figure 1-3As shown, a convenient fixing bracket for welding pressure guiding pipe includes two overlapping fixing brackets arranged in a U-shape for clamping pressure guiding pipe. Each fixing bracket includes a horizontal bar 1 and two vertical bars. Each of the two vertical bars is provided with two fixing ears 2 for connecting the two fixing brackets together. The fixing ears 2 on the two fixing brackets correspond one-to-one. A bolt 3 is provided between the corresponding fixing ears 2 on the two fixing brackets for connecting the two fixing brackets together.

[0022] As a further embodiment of the present invention, when the fixed bracket clamps the pressure guiding tube, the crossbar 1 is parallel to the pressure guiding tube, and the distance between the crossbar 1 and the pressure guiding tube is greater than or equal to 27cm.

[0023] As a further embodiment of the present invention, the bolt 3 is a wing bolt 3.

[0024] In the above embodiments, if the pressure guide pipe is manually held and fixed during welding, the welding arc may cause unnecessary injury to the person holding the pipe. Furthermore, prolonged holding during welding can lead to uneven stress on the two pipes, resulting in misalignment of the weld joints and substandard welding quality. The pressure transmitters are distributed throughout the construction device. When installing the pressure guide pipes, only the path between the pressure tapping point and the transmitter needs to be planned. During welding, two pressure guide pipes of the same model are passed parallel to each other through the gap between two fixed supports. The weld joints of the two pressure guide pipes are then aligned, and the bolts 3 on both sides of the fixed supports are tightened, causing the fixing ears 2 to clamp the pressure guide pipes to be welded. This invention uses two fixed supports to clamp the pressure guide pipes in the middle, and the bolts 3 control the clamping force, ensuring that the heads of the two pressure guide pipes to be welded are clamped and fixed. This eliminates the need for manual support during welding, preventing the heads of the two pressure guide pipes from shifting during welding and achieving a tight weld. Meanwhile, the fixed bracket is lightweight and portable, and can be flexibly disassembled and transported. It can be used in various on-site working environments. During welding operations, there is no need to consider the safety hazards of personnel other than the welder, which greatly improves welding quality and installation efficiency, and can more effectively ensure personnel safety.

[0025] The distance between the crossbar 1 and the pressure guide tube is greater than or equal to 27cm, which makes it convenient for welders to perform welding.

[0026] Among them, bolt 3 is a wing bolt, which makes it convenient for the operator to operate.

[0027] As a further embodiment of the present invention, the vertical rod includes a first rod 4 and a second rod 5 that are hinged together, and the second rod 5 is provided with an anti-slip pressure block 6 in the direction of contact with the pressure guide tube.

[0028] In the above embodiment, after welding the pressure guide tube, all bolts 3 need to be removed or loosened before the pressure guide tube can be taken off between the two fixed supports, which is extremely time-consuming. Furthermore, the bolts 3 need to be tightened again each time to fix the pressure guide tube, which is cumbersome. By setting the vertical rod as a rotatable splicing structure of rod 4 and rod 5, after welding, the bolts 3 on rod 5 can be removed, leaving rod 5 rotatable. Rotating rod 5 allows the pressure guide tube to be free, enabling it to easily detach from the invention. Before fixing the pressure guide tube, rotating rod 5 allows the anti-slip block 6 to clamp the pressure guide tube. This prevents the pressure guide tube from sliding radially for pressure guide tubes of different diameters, thus avoiding gaps at the joint of the two pressure guide tubes that could lead to welding failure.

[0029] As a further embodiment of the present invention, the crossbar 1 is provided with two connecting rods 7, and the end of the connecting rod 7 away from the crossbar 1 is provided with a limiting block 8 to prevent the two pressure guide pipe joints from misaligning. The limiting blocks 8 on the two crossbars 1 form two rings.

[0030] In the above embodiment, two rings can be formed by setting four limiting blocks 8. The welding head of the pressure guide tube will not be greatly deviated under the limitation of the rings, so that the two heads can always be in the welding position during the welding process.

[0031] As a further embodiment of the present invention, the inner side wall of the anti-slip pressure block 6 is provided with a first telescopic rod 9 that can be automatically reset, and the upper and lower ends of the ring are provided with a second telescopic rod 10 to clamp the pressure guide pipe joint to prevent it from being misaligned. A gas pipe for gas transportation is provided between the first telescopic rod 9 and the second telescopic rod 10 located on the same fixed bracket.

[0032] In the above embodiment, when the anti-slip pressure block 6 clamps the pressure guide tube, the first telescopic rod 9 is compressed, causing the gas inside the first telescopic rod 9 to enter the second telescopic rod 10 through the air pipe. After the second telescopic rod 10 extends, it tightly presses the pressure guide tube, which not only ensures that the pressure guide tube is centered and aligned, but also prevents the pressure guide tube from moving radially, further improving the welding accuracy of the pressure guide tube.

[0033] As a further embodiment of the present invention, one of the limiting blocks 8 is provided with an arc-shaped block 11 that rotates circumferentially thereon. The arc-shaped block 11 is provided with a rectangular block 12. The rectangular block 12 is provided with a limiting hole 13 for placing the welding gun head. The arc-shaped block 11 is provided with a connecting rope 14. The end of the connecting rope 14 away from the arc-shaped block 11 is divided into two forked ropes and connected to two bolts 3 away from the crossbar 1 respectively. The connecting rope 14 loosens the bolts 3 as the arc-shaped block 11 rotates.

[0034] In the above embodiment, the welding torch tip is placed into the limiting hole 13, at which point the welding tip is precisely aligned with the welding area of ​​the two pressure guide tubes. During welding, the welding torch is rotated, causing the welding tip to rotate within the limiting hole 13 and along with the arc-shaped block 11. After the welding tip rotates one revolution, the welding of the pressure guide tube is completed. At this point, the arc-shaped block 11 pulls the connecting rope 14, causing the other end of the connecting rope 14 to pull the bolt 3 on the second rod 5 to rotate, thus making the second rod 5 rotatable. A return spring can be installed between the first rod 4 and the second rod 5, allowing the second rod 5 to automatically spring back. By automatically unscrewing the bolt 3, the pressure guide tube can be released after welding is completed, saving working time.

[0035] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A convenient fixing bracket for welding pressure guiding pipes, characterized in that: It includes two overlapping fixed brackets for clamping the pressure guide tube in a U-shape. Each fixed bracket includes a horizontal bar (1) and two vertical bars. Each of the two vertical bars is provided with two fixing ears (2) for connecting the two fixed brackets together. The fixing ears (2) on the two fixed brackets correspond one-to-one. The fixing ears (2) at corresponding positions on the two fixed brackets are provided with bolts (3) for connecting the two fixed brackets together. The vertical rod includes a first rod (4) and a second rod (5) that are hinged together. The second rod (5) is provided with an anti-slip pressure block (6) in the direction of contact with the pressure guide tube. Two connecting rods (7) are provided on the crossbar (1). The end of the connecting rod (7) away from the crossbar (1) is provided with a limiting block (8) to prevent the two pressure guide pipe joints from misaligning. The limiting blocks (8) on the two crossbars (1) form two rings. The inner wall of the anti-slip block (6) is provided with a first telescopic rod (9) that can be automatically reset. The upper and lower ends of the ring are provided with a second telescopic rod (10) to clamp the pressure guide pipe joint and prevent it from being misaligned. A gas pipe for gas transportation is provided between the first telescopic rod (9) and the second telescopic rod (10) located on the same fixed bracket.

2. The convenient fixing bracket for welding pressure guiding pipes according to claim 1, characterized in that: When the fixed bracket clamps the pressure guide tube, the crossbar (1) is parallel to the pressure guide tube, and the distance between the crossbar (1) and the pressure guide tube is greater than or equal to 27cm.

3. The portable fixing bracket for welding pressure guide pipes according to claim 1, characterized in that: The bolt (3) is a wing bolt (3).

4. The convenient fixing bracket for welding pressure guiding pipes according to claim 1, characterized in that: One of the limiting blocks (8) is provided with an arc-shaped block (11) that rotates around its circumference. The arc-shaped block (11) is provided with a rectangular block (12). The rectangular block (12) is provided with a limiting hole (13) for placing the welding gun head. The arc-shaped block (11) is provided with a connecting rope (14). The end of the connecting rope (14) away from the arc-shaped block (11) is divided into two forked ropes and connected to two bolts (3) away from the crossbar (1). The connecting rope (14) loosens the bolts (3) as the arc-shaped block (11) rotates.

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